Location data · Baden-Württemberg
Sun hours in Freudenstadt
How sunny is Freudenstadt? Over a year the sun delivers 1,409 kilowatt-hours onto every square metre here — in June roughly 4 times as much per day as in December. “Sun hours” has two meanings: the weather report counts how long the sun shines. For solar power what matters is how much energy arrives — and that is what this page shows, as peak sun hours (hours of full sun power).
For solar planning this means: an optimally tilted, south-facing array (35°) harvests an annual average of 3.86 peak sun hours per day in Freudenstadt. In 9 out of 10 years at least 1,322 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.86 kWh/m²/d
- P90 annual total
- 1,322 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 3.1°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.65 | 2.71 | 3.94 | 4.93 | 5.06 | 5.65 | 5.60 | 5.20 | 4.60 | 3.26 | 2.06 | 1.60 |
| P90 | 1.27 | 1.90 | 2.81 | 3.95 | 4.22 | 4.87 | 4.99 | 4.66 | 4.05 | 2.68 | 1.48 | 1.13 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Freudenstadt. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Freudenstadt
The annual optimum for Freudenstadt is 35° south; anything between 23° and 50° counts as equivalent (below 2% difference). For winter operation (off-grid) 60° is optimal, for summer use 20°. Flat-laid modules lose 14.5 % versus the optimum. Adjusting twice a year would add 2.6 % here, monthly adjustment 3.4 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Freudenstadt?
A vertical south-facing railing in Freudenstadt harvests 989 kWh/m² per year — 70 % of what an optimally tilted 35° panel yields at the same spot. December softens the penalty: with the low winter sun, the vertical plane reaches 104 % of the 35° December value, computed from the same hourly data with its own plane transposition. Open the balcony solar calculator with these coordinates →
Neighbouring places compared
- Achern3.95 kWh/m²/d31 km
- Offenburg3.72 kWh/m²/d35 km
- Baden-Baden3.74 kWh/m²/d35 km